Catalog of U.S. Government Publications
1976-present; The Catalog of U.S. Government Publications (CGP) indexes electronic and print publications from the legislative, executive, and judicial branches of the U.S. government. Direct links are provided to those publications that are available online. Guide

The U.S. National Institutes of Health (NIH), through its National Library of Medicine (NLM), has developed this site in collaboration with all NIH Institutes and the Food and Drug Administration (FDA). It provides patients, family members, health care professionals, and members of the public access to updated information on thousands of federally and privately supported clinical trials for a range of diseases and conditions.

Records and citations from Google's Web index calculated to be scholarly. Although useful for most topics, it contains a small subset of available publications; other databases on this page will have additional items on your topic.

1995-present; over 58,000 full-text DOE research and development reports. Reports included in the database cover a wide variety of subjects in the sciences, including physics, chemistry, materials, biology, environmental sciences, energy technologies, engineering, computer and information science, and renewable energy.

1950-present; indexes over 4,800 journals in medicine, nursing, dentistry, veterinary medicine and the preclinical sciences. PubMed is the National Library of Medicine's search service that provides access to over 14 million citations in MEDLINE, and other related databases, with links to participating online journals. Guide | Tutorial

Originated in 1998; National Library of Medicine's selective list of authoritative health information sources from the National Institutes of Health and other government and professional organizations in the U.S. Updated nightly, it has over 4,000 articles on various diseases, symptoms, drugs and procedures, as well as interactive health tutorials, research news, local resources, directories of hospitals and physicians, clinical trials and links to MEDLINE for journal citations.

Dates vary; includes databases, research and current general information about substance abuse prevention, intervention, and treatment policies, programs, and practices. Also includes the Substance Abuse and Mental Health Data Archive.

1972-present; citations and abstracts to federal, state, and local government documents, books, research reports, journal articles, and unpublished research in the field of criminal justice. Some publications are available in full text.